Nortel 4134 安装指导
Fan tray
21
Figure 2
Secure Router 4134 DC power supply module
Secure Router 4134 DC power supply module
Fan tray
The Secure Router 4134 has four fans in the fan tray assembly.
The Secure Router 4134 checks the fan tray for faults every 15 seconds,
and checks the temperature in the chassis every 2 minutes. The fan speed
adjusts based on the chassis temperature. The following table shows the
relationship between chassis temperature and fan speed.
and checks the temperature in the chassis every 2 minutes. The fan speed
adjusts based on the chassis temperature. The following table shows the
relationship between chassis temperature and fan speed.
Table 1
Chassis temperature and fan speed
Chassis temperature and fan speed
Status
Temperature
Fan speed
Normal
Less than 61 degrees Celsius (141.8 degrees Fahrenheit)
39%
Critical
Greater or equivalent to 61 degrees Celsius (141.8
degrees Fahrenheit)
degrees Fahrenheit)
90%
Fault
Greater or equivalent to 71 degrees Celsius (159.8
degrees Fahrenheit)
degrees Fahrenheit)
100%
ATTENTION
While the system power is on, fans in the fan tray never completely stop rotating.
You can access the fan tray from the rear panel of the Secure Router 4134.
The following figure shows the location of the fan tray in the chassis, and
indicates air flow through the chassis.
The following figure shows the location of the fan tray in the chassis, and
indicates air flow through the chassis.
Nortel Secure Router 4134
Installation — Hardware Components
NN47263-301
01.02
Standard
10.0
7 August 2007
Copyright © 2007, Nortel Networks
.